Fairchild is to be seen on the series Aug. 10-11 and Aug. 13-14, playing a "Beverly Hills socialite friend of Stephanie Forrester, played by Susan Flannery, who prompts a dueling fashion show between rival fashion houses Forrester Creations and Jackie M."
Bullock reprises his role as Sergei, while Thicke returns as Rich Ginger, and Rivers plays herself, as celebrity judges at the fashion show. Their episodes are to air Aug. 12-14.
In addition, "America's Next Top Model" runner-up Samantha Potter will play a Jackie M. model during the episodes that air Aug. 13-14, CBS said.
Notable deaths of 2014 [PHOTOS]
Polly Bergen, Emmy Award-winning actress, dies